1 - AS 1087-1991 SODIUM HYPOCHLORITE SOLUTIONS FOR USE IN THE DAIRYING INDUSTRY
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
6 - 3 DEFINITION
6 - 4 APPEARANCE
6 - 5 SAMPLING AND TESTING CONDITIONS
6 - 5.1 Test samples
6 - 5.2 Reagents
6 - 5.3 Timing of tests
6 - 6 CHEMICAL PROPERTIES
6 - 6.1 Available chlorine
6 - 6.2 Free sodium hydroxide
6 - 6.3 Sodium chlorate
7 - 7 STABILITY TO HEAT
7 - 8 KEEPING QUALITY
7 - 9 PACKAGING
7 - 10 INFORMATION TO ACCOMPANY EACH DELIVERY
7 - 11 MARKING
9 - APPENDIX A - RECOMMENDED PRACTICES FOR SANITIZING DAIRYING EQUIPMENT WITH SODIUM HYPOCHLORITE SOLUTION
9 - A1 INTRODUCTION
9 - A2 RECOMMENDATIONS
9 - A3 SUMMARY
9 - A4 CAUTION
10 - APPENDIX B - METHODS FOR THE DETERMINATION OF AVAILABLE CHLORINE
10 - B1 SCOPE
10 - B2 METHOD 1: DETERMINATION OF AVAILABLE CHLORINE IN UNDILUTED SODIUM HYPOCHLORITE SOLUTIONS
10 - B2.1 Principle
10 - B2.2 Reagents
10 - B2.3 Apparatus
10 - B2.4 Procedure
11 - B2.5 Calculation
11 - B2.6 Report
11 - B3 METHOD 2: DETERMINATION OF AVAILABLE CHLORINE IN DILUTED SOLUTIONS OF SODIUM HYPOCHLORITE USED FOR SANITIZING
11 - B3.1 Principle
11 - B3.2 Reagents
11 - B3.3 Apparatus
11 - B3.4 Procedure
11 - B3.5 Calculation
12 - B3.6 Report
13 - APPENDIX C - METHOD FOR THE DETERMINATION OF FREE SODIUM HYDROXIDE
13 - C1 SCOPE
13 - C2 PRINCIPLE
13 - C3 REAGENTS
13 - C3.1 General
13 - C3.2 Hydrogen peroxide solution
13 - C3.3 Barium chloride solution
13 - C3.4 Bromthymol blue indicator
13 - C3.5 Standard hydrochloric acid (approximately 0.1 mol/L)
13 - C4 APPARATUS
13 - C4.1 One- mark pipette
13 - C4.2 Burette
13 - C4.3 Graduating measuring cylinder
13 - C4.4 Conical flask
13 - C5 PROCEDURE
13 - C6 CALCULATION
13 - C7 REPORT
14 - APPENDIX D - METHOD FOR THE DETERMINATION OF SODIUM CHLORATE
14 - D1 SCOPE
14 - D2 PRINCIPLE
14 - D3 REAGENTS
14 - D3.1 General
14 - D3.2 Hydrogen peroxide solution
14 - D3.3 Sodium hydroxide pellets
14 - D3.4 Ferrous sulfate solution
14 - D3.5 Sulfuric acid (1 + 1)
14 - D3.6 Orthophosphoric acid solution
14 - D3.7 Standard potassium permanganate solution (approximately 0.02 mol/ L)
14 - D3.8 Potassium iodide (KI) crystals
14 - D3.9 Acetic acid (1 + 1)
14 - D3.10 Standard sodium thiosulfate solution (approximately 0.1 mol/L)
14 - D3.11 Starch solution (5 g/ L)
14 - D4 APPARATUS
14 - D4.1 One-mark pipettes
14 - D4.2 Burette
14 - D4.3 Graduated measuring cylinders
14 - D4.4 Volumetric flasks
14 - D5 PROCEDURE
14 - D5.1 Preparation of the sample solution
15 - D5.2 Determination of total oxidizing materials
15 - D5.3 Determination of oxidizing materials other than chlorate
15 - D6 CALCULATION
15 - D7 REPORT
16 - APPENDIX E - METHOD FOR THE DETERMINATION OF THE STABILITY OF SODIUM HYPOCHLORITE SOLUTION
16 - E1 SCOPE
16 - E2 PRINCIPLE
16 - E3 APPARATUS
16 - E3.1 Water bath
16 - E3.2 Test tubes
16 - E4 PROCEDURE